Questions from Business Statistics


Q: Research has shown that, for baseball players, good hip range

Research has shown that, for baseball players, good hip range of motion results in improved performance and decreased body stress. The article “functional hip characteristics of baseball pitchers and...

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Q: What impact does fast-food consumption have on various dietary and

What impact does fast-food consumption have on various dietary and health characteristics? The article “effects of fast-food consumption on energy intake and Diet Quality among child...

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Q: Use the information given in the previous exercise to construct and interpret

Use the information given in the previous exercise to construct and interpret a 95% confidence interval estimate of the difference in mean daily calorie intake for teens who do eat fast food on a typi...

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Q: Do children diagnosed with attention deficit/ hyperactivity disorder (ADHD)

Do children diagnosed with attention deficit/ hyperactivity disorder (ADHD) have smaller brains than children without this condition? This question was the topic of a research study described in the p...

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Q: Use the information given in the previous exercise to construct and interpret

Use the information given in the previous exercise to construct and interpret a 95% confidence interval estimate of the difference in mean brain volume for children with and without ADHD.

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Q: In a study of malpractice claims where a settlement had been reached

In a study of malpractice claims where a settlement had been reached, two random samples were selected: a random sample of 515 closed malpractice claims that were found not to involve medical errors a...

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Q: In a study of the effect of college student employment on academic

In a study of the effect of college student employment on academic performance, the following summary statistics for GPA were reported for a sample of students who worked and for a sample of students...

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Q: Use the information given in the previous exercise to estimate the difference

Use the information given in the previous exercise to estimate the difference in mean GPA for students at the University of Central Florida who are employed and students who are not employed. Use a 90...

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Q: A newspaper story headline reads “gender plays part in monkeys’ toy

A newspaper story headline reads “gender plays part in monkeys’ toy choices, research finds—Like humans, male monkeys choose balls and cars, while...

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Q: A researcher at the Medical College of Virginia conducted a study of

A researcher at the Medical College of Virginia conducted a study of 60 randomly selected male soccer players and concluded that players who frequently “head” the b...

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